[Mono-list] bug: System.IO.FileStream

[Miguel de Icaza]

Hello,

> 
> Note, that I'm opening _directory_ with IO.FileStream. This is not allowed by specs, but current implementaion allows it. It fails later in Text.Encoding (do not know why there? - not reached in regular files - maybe this could be looked into as well)

In Unix it is valid to open a directory.  On some Unix systems you can
read the directory from the handle you obtained, in some others you
cant.

> Solution is to patch IO.FileStream's ctor to throws UnauthorizedAccessException when opening directory as described in MS docs.

Possibly.

> BTW2: --trace is great facility! Maybe this should be extended to produce customizable output or even xml files. It could be better than debugger in some cases. [eg. --trace:nojit,xml] [or integrate to debugger?] [profiling info?]

Yes, it would be nice to have more features in the tracer.